I think the piercing of ears represents that you need to listen to something very carefully, close attention is needed, that was the intention at the beginning of the dream but actually it represented cutting between you and another man. I think this does represent the ex you will meet and you need to carefully have guidelines and a line when meeting. Elves had a negative connotation originally in Germany, they were seen as sexual predators and people had methods of protecting themselves from them. These days they are seen as humorous and fun. I think you were given Elf ears perhaps to not take yourself too seriously, go for humour and smiling and light enjoyable things! You didn't like the sharing of the shears between both sides, perhaps it was not a clean break or you don't see the other guy as very clean in whatever meaning.
I think the cutting represents a severed connection from the past (the ex) and you two are here again. I would go into this light heartedly and don't take it too seriously. Think of some guide rules before meeting them, what do you definitely not want to tell them and what do you not want to happen? I think he might he might cross the line but if you have decided on your rules that you don't want to get serious here (and that is what it looks like in the dream) you should say you are not serious and just meeting for a laugh about old times! However I think you will hear something you needed to find out but I can't say it will be bad or good though but he might not have the same motives meeting up as you.
